diff options
Diffstat (limited to 'source4/libcli/resolve')
| -rw-r--r-- | source4/libcli/resolve/file.c | 150 | ||||
| -rw-r--r-- | source4/libcli/resolve/resolve_lp.c | 2 |
2 files changed, 152 insertions, 0 deletions
diff --git a/source4/libcli/resolve/file.c b/source4/libcli/resolve/file.c new file mode 100644 index 0000000000..950815ddc4 --- /dev/null +++ b/source4/libcli/resolve/file.c @@ -0,0 +1,150 @@ +/* + Unix SMB/CIFS implementation. + + broadcast name resolution module + + Copyright (C) Andrew Tridgell 1994-1998,2005 + Copyright (C) Jeremy Allison 2007 + Copyright (C) Jelmer Vernooij 2007 + Copyright (C) Andrew Bartlett <abartlet@samba.org> 2009-2010 + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. +*/ + +#include "includes.h" +#include "libcli/composite/composite.h" +#include "libcli/resolve/resolve.h" +#include "lib/socket/socket.h" +#include "system/network.h" +#include "lib/socket/netif.h" +#include "param/param.h" +#include "lib/util/util_net.h" +#include "libcli/nbt/libnbt.h" + +struct resolve_file_data { + const char *lookup_file; +}; + +struct resolve_file_state { + struct socket_address **addrs; + char **names; +}; + +/** + broadcast name resolution method - async send + */ +/* + general name resolution - async send + */ +struct composite_context *resolve_name_file_send(TALLOC_CTX *mem_ctx, + struct tevent_context *event_ctx, + void *userdata, uint32_t flags, + uint16_t port, + struct nbt_name *name) +{ + struct composite_context *c; + struct resolve_file_data *data = talloc_get_type_abort(userdata, struct resolve_file_data); + struct resolve_file_state *state; + struct sockaddr_storage *resolved_iplist; + int resolved_count, i; + + bool srv_lookup = (flags & RESOLVE_NAME_FLAG_DNS_SRV); + + if (event_ctx == NULL) { + return NULL; + } + + c = composite_create(mem_ctx, event_ctx); + if (c == NULL) return NULL; + + /* This isn't an NBT layer resolver */ + if (flags & RESOLVE_NAME_FLAG_FORCE_NBT || name->type != NBT_NAME_SERVER) { + composite_error(c, NT_STATUS_OBJECT_NAME_NOT_FOUND); + return c; + } + + if (composite_nomem(c->event_ctx, c)) return c; + + state = talloc_zero(c, struct resolve_file_state); + if (composite_nomem(state, c)) return c; + c->private_data = state; + + + c->status = resolve_dns_hosts_file_as_sockaddr(data->lookup_file, name->name, srv_lookup, state, &resolved_iplist, &resolved_count); + if (!composite_is_ok(c)) return c; + + for (i=0; i < resolved_count; i++) { + state->addrs = talloc_realloc(state, state->addrs, struct socket_address *, i+2); + if (composite_nomem(state->addrs, c)) return c; + + if (!(flags & RESOLVE_NAME_FLAG_OVERWRITE_PORT)) { + set_sockaddr_port((struct sockaddr *)&resolved_iplist[i], port); + } + + state->addrs[i] = socket_address_from_sockaddr(state->addrs, (struct sockaddr *)&resolved_iplist[i], sizeof(resolved_iplist[i])); + if (composite_nomem(state->addrs[i], c)) return c; + + state->addrs[i+1] = NULL; + + + state->names = talloc_realloc(state, state->names, char *, i+2); + if (composite_nomem(state->addrs, c)) return c; + + state->names[i] = talloc_strdup(state->names, name->name); + if (composite_nomem(state->names[i], c)) return c; + + state->names[i+1] = NULL; + + i++; + } + + composite_done(c); + return c; +} + +/* + general name resolution method - recv side + */ +NTSTATUS resolve_name_file_recv(struct composite_context *c, + TALLOC_CTX *mem_ctx, + struct socket_address ***addrs, + char ***names) +{ + NTSTATUS status; + + status = composite_wait(c); + + if (NT_STATUS_IS_OK(status)) { + struct resolve_file_state *state = talloc_get_type(c->private_data, struct resolve_file_state); + *addrs = talloc_steal(mem_ctx, state->addrs); + if (names) { + *names = talloc_steal(mem_ctx, state->names); + } + } + + talloc_free(c); + return status; +} + + +bool resolve_context_add_file_method(struct resolve_context *ctx, const char *lookup_file) +{ + struct resolve_file_data *data = talloc(ctx, struct resolve_file_data); + data->lookup_file = lookup_file; + return resolve_context_add_method(ctx, resolve_name_file_send, resolve_name_file_recv, data); +} + +bool resolve_context_add_file_method_lp(struct resolve_context *ctx, struct loadparm_context *lp_ctx) +{ + return resolve_context_add_file_method(ctx, lp_parm_string(lp_ctx, NULL, "resolv", "host file")); +} diff --git a/source4/libcli/resolve/resolve_lp.c b/source4/libcli/resolve/resolve_lp.c index b41e2b98d8..887e0d543e 100644 --- a/source4/libcli/resolve/resolve_lp.c +++ b/source4/libcli/resolve/resolve_lp.c @@ -35,6 +35,8 @@ struct resolve_context *lp_resolve_context(struct loadparm_context *lp_ctx) resolve_context_add_wins_method_lp(ret, lp_ctx); } else if (!strcmp(methods[i], "bcast")) { resolve_context_add_bcast_method_lp(ret, lp_ctx); + } else if (!strcmp(methods[i], "file")) { + resolve_context_add_file_method_lp(ret, lp_ctx); } else if (!strcmp(methods[i], "host")) { resolve_context_add_host_method(ret); } else { |